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1
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2
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3
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4
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5
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6Published 1979“...QC 773 .S989...”
Conference Proceeding Book -
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9
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10
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11
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12
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13by Kapit︠s︡a, P. L. (Petr Leonidovich), 1894-“...QC 16 .K17...”
Published 1989
Government Document Book -
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17Published 1969“...QC 16 .M3 .S619...”
Book -
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20